Electronic Principles
Current is

The flow of charged particles through a material
An imbalance of electrical charges
The number of free electrons in an atom
The force that causes electrons to flow
None of these

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Electronic Principles
What is a negative ion?

An atom that contains more electrons than neutrons
An atom that contains more protons than electrons
An atom that contains more protons than neutrons
None of these
An atom that contains more electrons than protons

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